(1) Except as provided in Sentence (2) and Article 5.7.3.4., building assemblies described in Article 5.7.3.1. shall be protected by waterproofing in accordance with Article 5.7.3.3. so as to minimize the ingress of ground water into the building or the accumulation of ground water against the building.
(2) Waterproofing is not required where it can be shown that,
(a) a building is designed to accommodate the ingress or accumulation of ground water, or
(b) the ingress or accumulation of ground water will not adversely affect any of,
(i) the health or safety of building users,
(ii) the intended use of the building, or
(iii) the operation of building services.